Curtain hanging system



FIG. 1 is a top front perspective view of a curtain hanging system showing our new design;

FIG. 2 is a first side view thereof;

FIG. 3 is an opposite side view thereof;

FIG. 4 is a front view thereof;

FIG. 5 is a rear view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines depict an environment of use that forms no part of the claim. 

CLAIM The ornamental design for a curtain hanging system, as shown and described. 